/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.util.slicedMap;
import com.google.common.collect.Maps;
import kotlin.jvm.functions.Function3;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.kotlin.utils.Printer;
import java.util.Collection;
import java.util.Map;
public class TrackingSlicedMap extends SlicedMapImpl {
private final Map<ReadOnlySlice<?, ?>, SliceWithStackTrace<?, ?>> sliceTranslationMap = Maps.newHashMap();
private final boolean trackWithStackTraces;
public TrackingSlicedMap(boolean trackWithStackTraces) {
this.trackWithStackTraces = trackWithStackTraces;
}
private <K, V> SliceWithStackTrace<K, V> wrapSlice(ReadOnlySlice<K, V> slice) {
SliceWithStackTrace<?, ?> translated = sliceTranslationMap.computeIfAbsent(slice, k -> new SliceWithStackTrace<>(slice));
//noinspection unchecked
return (SliceWithStackTrace) translated;
}
@Override
public <K, V> V get(ReadOnlySlice<K, V> slice, K key) {
return super.get(wrapSlice(slice), key).value;
}
@Override
public <K, V> Collection<K> getKeys(WritableSlice<K, V> slice) {
return super.getKeys(wrapSlice(slice));
}
@Override
public void forEach(@NotNull Function3<WritableSlice, Object, Object, Void> f) {
super.forEach((slice, key, value) -> {
f.invoke(((SliceWithStackTrace) slice).getWritableDelegate(), key, ((TrackableValue<?>) value).value);
return null;
});
}
@Override
public <K, V> void put(WritableSlice<K, V> slice, K key, V value) {
super.put(wrapSlice(slice), key, new TrackableValue<>(value, trackWithStackTraces));
}
private static class TrackableValue<V> {
private final static StackTraceElement[] EMPTY_STACK_TRACE = new StackTraceElement[0];
private final V value;
private final StackTraceElement[] stackTrace;
private final String threadName;
private TrackableValue(V value, boolean storeStack) {
this.value = value;
this.stackTrace = storeStack ? Thread.currentThread().getStackTrace() : EMPTY_STACK_TRACE;
this.threadName = Thread.currentThread().getName();
}
private Appendable printStackTrace(Appendable appendable) {
Printer s = new Printer(appendable);
s.println(value);
s.println("Thread: " + threadName);
s.println("Written at ");
StackTraceElement[] trace = stackTrace;
for (StackTraceElement aTrace : trace) {
s.println("\tat " + aTrace);
}
s.println("---------");
return appendable;
}
@Override
public String toString() {
return printStackTrace(new StringBuilder()).toString();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
TrackableValue other = (TrackableValue) o;
if (value != null ? !value.equals(other.value) : other.value != null) return false;
return true;
}
@Override
public int hashCode() {
return value != null ? value.hashCode() : 0;
}
}
private class SliceWithStackTrace<K, V>
extends AbstractWritableSlice<K, TrackableValue<V>>
implements WritableSlice<K, TrackableValue<V>> {
private final ReadOnlySlice<K, V> delegate;
private SliceWithStackTrace(@NotNull ReadOnlySlice<K, V> delegate) {
super(delegate.toString());
this.delegate = delegate;
}
// Methods of ReadOnlySlice
@Override
public TrackableValue<V> computeValue(SlicedMap map, K key, TrackableValue<V> value, boolean valueNotFound) {
return new TrackableValue<>(delegate.computeValue(map, key, value == null ? null : value.value, valueNotFound), trackWithStackTraces);
}
@Override
public ReadOnlySlice<K, TrackableValue<V>> makeRawValueVersion() {
return wrapSlice(delegate.makeRawValueVersion());
}
// Methods of WritableSlice
private WritableSlice<K, V> getWritableDelegate() {
return (WritableSlice<K, V>) delegate;
}
@Override
public boolean isCollective() {
return getWritableDelegate().isCollective();
}
@Override
public RewritePolicy getRewritePolicy() {
return getWritableDelegate().getRewritePolicy();
}
@Override
public void afterPut(MutableSlicedMap map, K key, TrackableValue<V> value) {
getWritableDelegate().afterPut(map, key, value.value);
}
@Override
public boolean check(K key, TrackableValue<V> value) {
return getWritableDelegate().check(key, value.value);
}
}
}